gcr: Fix annotation of _gcr_gnupg_key_get_secret_dataset
gcr: Fix annotation of _gcr_gnupg_key_get_secret_dataset

Distrotech/gcr,stefwalter/gcr,stefwalter/gcr,stefwalter/gcr,Distrotech/gcr,Distrotech/gcr,stefwalter/gcr,Distrotech/gcr